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An248 – Cirrus Logic AN248 User Manual

Page 5

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AN248

5

2.2.2

Functional Changes

The CS4344 supports the same internal SCLK mode for de-emphasis support as in the CS4334 family.

The part numbers for the CS4344 family were assigned to be congruent with those of the CS4334 family.
The last digits of each variant in each family are the same for similar devices. This allows for an easy decision
on which new part to use. Note that the CS4349 (18-bit RJ) is not available at this time. Ordering information
is provided in the back of the CS4344 datasheet.

The CS4334 family MCLK/LRCK ratio of 512x with a 32 kHz sampling rate is not supported by the CS4344
family. All other MCLK/LRCK ratios and sample rates from the CS4334 family are supported. It is
recommended for best performance not to use

Double Speed Mode

with sample rates below 50 kHz as

noted in the CS4344 datasheet.

192 kHz sampling can be achieved simply by lowering the MCLK/LRCK ratio to 192x, 128x, 96x, or 64x and
increasing the sampling rate.

Contacting Cirrus Logic Support

For all product questions and inquiries contact a Cirrus Logic Sales Representative.
To find one nearest you go to

http://www.cirrus.com/corporate/contacts/sales.cfm

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